Eight　representative　automobile　manufacturing　enterprises　were　investigated,　and　109　samples　of　raw　and　auxiliary　materials,　including　coatings　and　adhesives,　were　collected　to　determine　reactive　organic　carbon　(ROC)　and　to　establish　the　source　composition　spectrum　of　ROC　in　automobile　manufacturing　industry.　The　maximum　incremental　reactivity　(MIR)　method　and　two-product　parametric　method　were　used　to　quantify　the　corresponding　contributions　of　ROC　to　the　generation　of　O3　and　SOA.　The　results　showed　that:　①　The　VOC　contents　in　different　types　of　raw　and　auxiliary　materials　varied　considerably:　the　average　ρ(VOCs)　of　water-based　and　solvent-based　automotive　coatings　were　289.92　and　490.32g/L;　the　average　ρ(VOCs)　of　water-based,　bulk　and　solvent-based　adhesives　were　27.00,　27.50　and　196.67g/L,　respectively;　and　the　average　ρ(VOCs)　of　water-based　and　solvent-based　cleaning　agents　were　116.60　and　831.20g/L.　②　The　main　components　of　water-based　coatings　were　alcohol　ethers　and　ether　esters,　esters　and　alcohols,　the　main　components　of　solvent-based　coatings　were　aromatic　hydrocarbons,　esters　and　alcohols,　and　the　main　components　of　both　bulk　and　solvent-based　adhesives　were　alkanes.　③　In　water-based　coatings,　the　mass　proportions　of　various　organics　were　SVOCs　(36.03%),　IVOCs　(37.77%)　and　VOCs　(26.21%).　In　solvent-based　coatings,　the　mass　proportions　of　various　organics　were　IVOCs　(4.59%)　and　VOCs　(95.41%).　In　bulk　adhesives,　the　main　organics　was　VOCs　(100%).　In　solvent-based　adhesives,　the　mass　proportions　of　various　organics　were　IVOCs　(2.64%)　and　VOCs　(97.36%).　④　The　OFP　productions　by　water-based　coatings,　solvent-based　coatings,　bulk　and　solvent-based　adhesives　were　93.67,　2679.27,　25.82,　and　41.82g　O3/(L　raw　materials),　respectively,　and　the　primary　contributing　species　were　diethylene　glycol　butyl　ether　(42.03%),　1,2,3-trimethylbenzene　(28.29%),　2,2,4,6,6-pentamethylheptane　(52.20%),　and　2,2,4,6,6-pentamethylheptae　(78.63%),　respectively.　⑤　The　SOA　productions　by　water-based　coatings,　solvent-based　coatings,　bulk　and　solvent-based　adhesives　were　18.49,　16.70,　4.82,　and　4.28g　SOA/(L　raw　materials),　respectively.　The　largest　contributions　to　SOA　formation　were　caused　by　IVOC　and　SVOC　species　in　water-based　coatings,　yet　the　largest　contributions　to　SOA　formation　were　VOCs　species　in　solvent-based　coatings　and　adhesives.　⑥　After　adding　the　assessment　of　the　contribution　of　IVOCs　and　SVOCs　species　to　SOA　generation　in　the　study,　it　was　found　that　SOA　productions　per　unit　volume　of　water-based　coatings　were　higher　than　that　for　solvent-based　coatings　and　adhesives,　which　showed　that　the　effects　of　SVOCs　and　IVOCs　in　water-based　coatings　on　the　atmospheric　environment　should　be　taken　into　account　in　pollution　prevention　policies　formulation.　©　2025　Chinese　Society　for　Environmental　Sciences.　All　rights　reserved.